Productive areas are typically found where structure creates ambush points or where food is concentrated. Deep pools located near bends in the stream, especially those shaded by large overhanging trees, are reliable spots. Areas where fallen trees or logjams create cover hold predatory fish. The mouths of smaller tributaries or seepages entering the main channel can attract foraging fish. Confluences where Igarapé do Prata meets a larger river often create dynamic fishing areas with changing depths and currents.